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Tag: "rich" at biology news

Proteomics brings researchers closer to understanding microbes that produce acid mine drainage

...ract with minerals to produce the hot, heavy-metal rich and highly acidic water that drains from the mine and contaminates surrounding streams. The film, which can form a tough sheet that is millimeters thick, sits atop green, 108 degree Fahrenheit runoff containing zinc, iron, copper and arsenic. "This ...

Scientists discover global pattern of big fish diversity in open oceans

...tspots Coral reefs have long been known for their rich diversity of fish and invertebrates, but examining the diversity of highly mobile fish in the open ocean has been elusive. Using the only global data set stretching back to the 1950's ?Japanese longline fisheries data ?and cross referencing these dat...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

... UAF. "It now appears possible to confirm that the rich biodiversity surprising deep-sea explorers worldwide exists as well in deep Arctic waters, the most under-studied area of the ocean world." Baseline data about such long-inaccessible marine species will have growing importance for measuring impacts ...

Innovative coating could give medical implants a longer life

..., a widely studied antifouling polymer. "We had a rich chemistry available to us when designing this polymer," said Messersmith. "The chemical characteristics of the antifouling component are similar to polyethylene glycol but it lasts longer because it is a peptoid and enzyme resistant. Plus, the struct...

DOE JGI launches IMG public online microbial genome data clearinghouse

...e IMG system will enable our scientists to tap the rich diversity of microbial environments and harness the possibilities that they hold for addressing challenges in environmental cleanup, medicine, agriculture, industrial processes, and alternative energy production." The DOE JGI is currently producing ...

Venom doc tracks down snake bioweapons

... a very stable molecular structure ?those that are rich in the amino acid cysteine, which enables proteins to form intramolecular disulfide linkages. "These structures provided an excellent framework for the 60-80 million years of 'evolutionary tinkering' that have turned these proteins into potent, highl...

Hydrogen and methane provide raw energy for life at 'Lost City'

...s of microorganisms ?comparable to what's found in rich organic sediments. However the diversity of species is low with, for example, just a handful of methane-producing and methane-consuming Archaea. In surprising contrast, researchers discovered Lost City has a diversity of "larger" organisms that's as...

Currents could disrupt ocean food chain

... supply of phytoplankton at the surface, forming a rich nutrient source at the bottom of the marine food web. There is growing concern by a number of scientists, however, that higher levels of human-generated carbon dioxide could increase water and air temperatures and decrease salinity in the North Atla...

Scientists reveal the shape of a protein that helps retroviruses break into cells

...oxygen content, about 21 percent today, was a very rich 30 percent in the early Permian period. However, previous carbon-cycle modeling by Robert Berner at Yale University has calculated that atmospheric oxygen began plummeting soon after, reaching about 16 percent at the end of the Permian and bottoming ...

Low oxygen likely made Great Dying worse, greatly delayed recovery

...oxygen content, about 21 percent today, was a very rich 30 percent in the early Permian period. However, previous carbon-cycle modeling by Robert Berner at Yale University has calculated that atmospheric oxygen began plummeting soon after, reaching about 16 percent at the end of the Permian and bottoming ...

Man-made wetland's effectiveness similar to natural marsh

...ut a wetland that reaches that point has extremely rich soil, which could be harvested and spread over a farm field. Or the wetland itself could be turned into a field again, assuming there are other wetlands nearby to take its place." The story isn't quite the same with nitrates ?a nitrogen-based compou...

Study reveals candidate targets for anti-retroviral therapeutics

...e or homolog in the human genome, thus providing a rich source of candidate retrovirus host genes. Sandmeyer and colleagues hope that this study, along with related studies of retrovirus-like elements in yeast, will ultimately lead to the development of a new generation of anti-retroviral therapeutics. ...

Taking the piste out of Alpine vegetation

...y say. Some alpine ecosystems are extraordinarily rich in species, but they are also sensitive and susceptible to changes in land use and climate. ...

NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses

...e lacking a p27 gene that were fed with a corn-oil rich diet (labeled AIN-76A, also low in calcium and vitamin D) formed tumors whereas knock-out mice fed with their regular chow (which was enriched with soybean oil) did not. And p27 knock-out mice given a Western diet, full of fat and lacking calcium and...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

...A was involved in the degradation of genes with AU rich elements, and that the microRNA used only eight bases to target the mRNA. Given that microRNAs have such a short targeting sequence, they may have broad targeting ability, says Han. Significantly, the researchers found that for the AU-rich element d...

Small species back-up giant marsupial climate change extinction claim

... first systematic analysis of a site in the fossil rich Darling Downs region of south-eastern Queensland. Reported in the journal Memoirs of the Queensland Museum tomorrow (Tuesday 31 May) they found smaller species, dependent on a wetter environment, had also disappeared. By systematically analysing a ...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...love is associated with subcortical reward regions rich with dopamine; and (2) romantic love engages brain systems associated with motivation to acquire a reward. Brown explains some of these findings, commenting that "when our participants looked at a photo of his/her beloved, specific activation occurr...

New online portal merges vast data on Gulf of Maine ecosystem

A new online portal consolidates decades of rich marine data, much of it available for the first time, enabling resource managers and scientific researchers to combine and analyze information in unprecedented ways, creating new insights into the Gulf of Maine's ecology. Launched today by the Gulf ...

Live fast, die young true for forests too

...ctive forests, such as tropical forests growing on rich soils, the rates of both "deposits" (tree births) and "withdrawals" (tree deaths) are high. But if tree births suddenly stopped, or if tree death rates doubled, the numbers of trees in these forests would be halved in just 30 years. In contrast, sai...

Scientists identify new model Of NK cell development

... near special sites called parafollicular regions, rich in T cells and NK bright cells. "We thought this was pretty interesting because we know that in order for these NK precursor cells to grow and differentiate, they need one of two cytokines, interleukin-2 or interleukin-15," says Freud. "So it may no...

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